gamingtcui: Add stub for ProcessPendingGameUI().

dlls/api-ms-win-gaming-tcui-l1-1-0/api-ms-win-gaming-tcui-l1-1-0.spec

-@ stub ProcessPendingGameUI
+@ stdcall ProcessPendingGameUI(long) gamingtcui.ProcessPendingGameUI
 @ stub ShowChangeFriendRelationshipUI
 @ stub ShowGameInviteUI
 @ stub ShowPlayerPickerUI

dlls/gamingtcui/Makefile.in

 MODULE = gamingtcui.dll
+
+EXTRADLLFLAGS = -mno-cygwin
+
+C_SRCS = \
+	gamingtcui_main.c

dlls/gamingtcui/gamingtcui.spec

@@ -2,7 +2,7 @@
 @ stub CheckGamingPrivilegeSilentlyForUser
 @ stub CheckGamingPrivilegeWithUI
 @ stub CheckGamingPrivilegeWithUIForUser
-@ stub ProcessPendingGameUI
+@ stdcall ProcessPendingGameUI(long)
 @ stub ShowChangeFriendRelationshipUI
 @ stub ShowChangeFriendRelationshipUIForUser
 @ stub ShowCustomizeUserProfileUI

dlls/gamingtcui/gamingtcui_main.c

+/*
+ * Copyright 2021 Paul Gofman for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ */
+
+#include <stdarg.h>
+
+#include "windef.h"
+#include "winbase.h"
+#include "gamingtcui.h"
+
+#include "wine/debug.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(gamingtcui);
+
+HRESULT WINAPI ProcessPendingGameUI(BOOL wait_for_completion)
+{
+    FIXME("wait_for_completion %#x stub.\n", wait_for_completion);
+
+    return S_OK;
+}

include/Makefile.in

@@ -301,6 +301,7 @@ SOURCES = \
 	fontsub.h \
 	fusion.idl \
 	gameux.idl \
+	gamingtcui.h \
 	gdiplus.h \
 	gdipluscolor.h \
 	gdipluscolormatrix.h \

include/gamingtcui.h

+/*
+ * Copyright 2021 Paul Gofman for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ */
+
+#ifndef __WINE_GAMINGTCUI_H
+#define __WINE_GAMINGTCUI_H
+
+#include <windows.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+HRESULT WINAPI ProcessPendingGameUI(BOOL wait_for_completion);
+
+#ifdef __cplusplus
+}
+#endif
+#endif